Need guidance for 5 days trip plan in June 9-15

Hi
I am travelling to Hangzhou in June this year. I need to know things I can do in or around Hangzhou, even if I have to take 2-3 hour trip to some near by areas.
The above answer by Rita is good, but can some one give me a good plan
I am already taking a night time boat trip,
Would appreciate the help.
Last thing, DO they accept cash? if yes US$ or CNY?
regards
Humayun